NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
509 reports128,000 miles · Aug 17, 2009
Power Train
2002 CHEVY SILVERADO C1500 PLASTIC CLUTCH PEDAL AND PLASTIC SLATE CYLINDER HAS BROKEN APART TWICE. ONCE AROUND 80,000 MILES AND 128,000 ENDANGER MY LIFE ONCE ON THE FREEWAY AND ON HEAVY STREET TRAFFIC . I FEEL THAT THE PROBLEM I AM HAVING IS DANGER TO MY HEALTH. I KNOW THESE PART SHOULD NOT HAVE BEEN INSTALLED OR APPROV…
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2002 CHEVY SILVERADO C1500 PLASTIC CLUTCH PEDAL AND PLASTIC SLATE CYLINDER HAS BROKEN APART TWICE. ONCE AROUND 80,000 MILES AND 128,000 ENDANGER MY LIFE ONCE ON THE FREEWAY AND ON HEAVY STREET TRAFFIC . I FEEL THAT THE PROBLEM I AM HAVING IS DANGER TO MY HEALTH. I KNOW THESE PART SHOULD NOT HAVE BEEN INSTALLED OR APPROVED. SINCE THIS IS THE MOST IMPORTANT PARTS WITH A MANUAL TRANSMISSION, I FEEL THESE PLASTIC DO NOT BELONG IN THE POWERTRAIN SYSTEM PLEASE HELP ME WITH THIS PROBLEMS I HAVE TWO PLASTIC CLUTCH OLD PARTS FOR PROOF. THANK YOU *TR
NHTSA ODI #10280689
18,000 miles · Aug 5, 2009
Service Brakes, Hydraulic
THE BRAKES ON MY 2002 CHEVY SILVERADO DO NOT WORK PROPERLY THE BRAKE PADS ONLY SEEM TO RUB ON THE FRONT OF THE ROTORS SO WE REPLACED THE ROTORS & BRAKE PADS & THE PROBLEM IS STILL THERE THE STOPPING TIME IS NOT WHERE IT SHOULD BE. *TR
NHTSA ODI #10279520
Mileage unknown · Jun 20, 2009
Steering
STEERING COLUMN RATTLING AND VIBRATING EXCESSIVELY ON MY 2002 CHEVROLET SILVERADO. WHILE VEHICLE WAS STILL UNDER WARRANTY, THE DEALER REPORTED THAT THE COLUMN JUST NEEDED TO BE GREASED. THREE DAYS LATER, THE NOISE WAS BACK. SAME THING WAS DONE WHEN THE TRUCK WAS TAKEN BACK TO THE DEALER. THIS APPEARS TO BE A COMMON PROBLEM W…
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STEERING COLUMN RATTLING AND VIBRATING EXCESSIVELY ON MY 2002 CHEVROLET SILVERADO. WHILE VEHICLE WAS STILL UNDER WARRANTY, THE DEALER REPORTED THAT THE COLUMN JUST NEEDED TO BE GREASED. THREE DAYS LATER, THE NOISE WAS BACK. SAME THING WAS DONE WHEN THE TRUCK WAS TAKEN BACK TO THE DEALER. THIS APPEARS TO BE A COMMON PROBLEM WITH THE PICK UP. THE VIBRATION FROM THE COLUMN IS ENOUGH TO PUT YOUR HANDS TO SLEEP AND THE NOISE IS EXTREMELY ANNOYING. *TR
NHTSA ODI #10274430
18,031 miles · May 8, 2009
Service Brakes, HydraulicSteeringVisibility
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER CLEANED THE SPEED SENSOR, BUT DID NOT REPLACE ANY PARTS. THE FAILURE HAS RECURRED AND THE BRAKES STICK WHEN ATTEMPTING TO STOP THE VEHICLE AT LOW SPEEDS. ON T…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER CLEANED THE SPEED SENSOR, BUT DID NOT REPLACE ANY PARTS. THE FAILURE HAS RECURRED AND THE BRAKES STICK WHEN ATTEMPTING TO STOP THE VEHICLE AT LOW SPEEDS. ON THE FOURTH TRIP TO THE DEALER, THE CONTACT WAS INFORMED THAT NO FAILURES COULD BE FOUND. SHE IS UNSURE IF THE DEALER WILL REPLACE OR CLEAN THE SENSOR, BUT SHE REQUESTED THAT IT BE REPLACED. IN ADDITION, THE INTERMEDIATE STEERING SHAFT WAS REPLACED WITH A RE-MANUFACTURED PART IN JULY OF 2005 AT 18,031 MILES. IN NOVEMBER OF 2006, AT 29,650 MILES, THE STEERING SHAFT WAS LUBED. IN APRIL OF 2008, AT 43,194 MILES, THE STEERING SHAFT WAS REPLACED A SECOND TIME. CURRENTLY, AT 56,000 MILES, THE VEHICLE IS STILL EXPERIENCING ISSUES. THE DEALER MUST CHECK AND REPLACE THE SHAFT FAILURES EVERY 25,000 MILES. LASTLY, THE REAR BRAKE ROTORS WERE RESURFACED FOUR TIMES AND ALL OF THE WINDOW REGULATORS HAVE TO BE REPLACED. THE VEHICLE IS CURRENTLY AT THE DEALER TO HAVE ALL OF THE ISSUES REPAIRED. THE FAILURE MILEAGE WAS 18,031. UPDATED 07/02/09. *LJ
NHTSA ODI #10268182
10,000 miles · Apr 29, 2009
Parking Brake
02 SILVERADO, PARK BRAKE SHOE IS NOT HELD IN PLACE SECURELY AND MOVES AROUND IN THE HUB AT ANY BUMP IN THE ROAD, ESPECIALLY AT LOW SPEEDS. BECAUSE THE BRAKE LEVERS ARE INVERTED, THE DRIVER SIDE BRAKE WILL LOCK UP WHEN HITTING A POT HOLE IN MY DRIVE WAY DAILY. THIS IS NOT THE REAR END FREEZING UP OR TRANSMISSION MALFUNCTION. ON…
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02 SILVERADO, PARK BRAKE SHOE IS NOT HELD IN PLACE SECURELY AND MOVES AROUND IN THE HUB AT ANY BUMP IN THE ROAD, ESPECIALLY AT LOW SPEEDS. BECAUSE THE BRAKE LEVERS ARE INVERTED, THE DRIVER SIDE BRAKE WILL LOCK UP WHEN HITTING A POT HOLE IN MY DRIVE WAY DAILY. THIS IS NOT THE REAR END FREEZING UP OR TRANSMISSION MALFUNCTION. ONE TIRE LOCKS UP AND THE OTHER SPINS EXCESSIVELY. FOR PROOF, JUST TAKE THE HUB OFF AND LOOK AT HOW THE SHOE IS NOT HELD IN PLACE. A CORRECTIVE PART NEEDS TO BE ADDED , HOPEFULLY NOBODY HAS BEEN INJURED BECAUSE OF THIS. THIS WAS MENTIONED TO THE CHEVY DEALER BY MYSELF IN 2003 AND IF I WOULD HAVE KNOWN HOW TO CONTACT YOU BACK THEN, I WOULD HAVE ASAP. *TR
NHTSA ODI #10267263
22,338 miles · Apr 17, 2009
Service Brakes, Hydraulic
I CURRENTLY OWN A 2002 SILVERADO 1500 Z71 WITH 22,300 MILES. TODAY WHILE DRIVING IT I NOTICED THAT THE BRAKES WERE A LITTLE SOFTER THEN NORMAL AND NOT STOPPING THE TRUCK VERY WELL. SHORTLY AFTER THAT WHILE COMING TO A STOP I PRESSED THE BRAKES HARDER AND THEY WENT TO THE FLOOR AND I HAD VERY LITTLE TO NO STOPPING. I HAD TO USE T…
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I CURRENTLY OWN A 2002 SILVERADO 1500 Z71 WITH 22,300 MILES. TODAY WHILE DRIVING IT I NOTICED THAT THE BRAKES WERE A LITTLE SOFTER THEN NORMAL AND NOT STOPPING THE TRUCK VERY WELL. SHORTLY AFTER THAT WHILE COMING TO A STOP I PRESSED THE BRAKES HARDER AND THEY WENT TO THE FLOOR AND I HAD VERY LITTLE TO NO STOPPING. I HAD TO USE THE E-BRAKE TO STOP THE TRUCK AND GET IT OFF THE ROAD. IT SEEMS THAT THE BRAKE LINES FROM THE MASTER CYLINDER TO THE ABS BOX RUSTED OUT. THIS TRUCK IS NOT A DAILY DRIVER AND RARELY WILL SEE A ROAD WHEN THERE IS SALT ON IT. WITH THIS FEW OF MILES I DON'T THINK THIS SHOULD HAPPEN DUE TO THE FACT THAT I WAS LUCKY AND COULD HAVE BEEN IN A BAD ACCIDENT. I HAVE ALSO FOUND OUT THAT THIS HAS HAPPENED ON A LOT OF OTHER SILVERADO/SIERRAS. CURRENTLY THE LINES ARE STILL BROKEN AND HAVE YET TO BE REPLACED BUT WILL NEED TO BE. *TR
NHTSA ODI #10265909
96,000 miles · Apr 11, 2009
Steering
WHEN MAKING A TURN I HEAR A THUMPING NOISE IN THE STEERING COLUMN. *TR
NHTSA ODI #10265004
66,800 miles · Mar 30, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH, THE ANTI-LOCK BRAKES ACTIVATED UNEXPECTEDLY. AT HIGHWAY SPEEDS, THE BRAKE PEDAL WOULD EXTEND ALL THE WAY TO THE FLOOR OR FREEZE TO THE POINT WHERE IT COULD NOT BE DEPRESSED AT ALL. THE VEHICLE WAS TAKEN TO A DEALER AND THEY FOUND A RECALL/SAF…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH, THE ANTI-LOCK BRAKES ACTIVATED UNEXPECTEDLY. AT HIGHWAY SPEEDS, THE BRAKE PEDAL WOULD EXTEND ALL THE WAY TO THE FLOOR OR FREEZE TO THE POINT WHERE IT COULD NOT BE DEPRESSED AT ALL. THE VEHICLE WAS TAKEN TO A DEALER AND THEY FOUND A RECALL/SAFETY IMPROVEMENT ACT THAT LISTED THE SAME FAILURES AS THE CONTACT'S YEAR, MAKE, AND MODEL VEHICLE. HOWEVER, HIS VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER STATED THAT THEY COULD NOT ASSIST WITH THE REPAIRS; THEREFORE, THE CONTACT WOULD HAVE TO PAY OVER $500 TO HAVE THE VEHICLE REPAIRED. THE NHTSA CAMPAIGN ID NUMBER WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 66,800.
NHTSA ODI #10263683
98,000 miles · Mar 23, 2009
Engine And Engine CoolingPower Train
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED SEVERAL ISSUES WITH HIS VEHICLE AND TOOK IT TO AN INDEPENDENT MECHANIC FOR REPAIR. WHEN HE TOOK THE RECEIPT FOR THE REPAIR TO THE DEALER, THEY REFUSED TO SPEAK WITH HIM. THE DEALER CLAIMED TO HAVE CALLED THE MANUFACTURER AND WAS INFORMED THAT THEY WE…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED SEVERAL ISSUES WITH HIS VEHICLE AND TOOK IT TO AN INDEPENDENT MECHANIC FOR REPAIR. WHEN HE TOOK THE RECEIPT FOR THE REPAIR TO THE DEALER, THEY REFUSED TO SPEAK WITH HIM. THE DEALER CLAIMED TO HAVE CALLED THE MANUFACTURER AND WAS INFORMED THAT THEY WERE NOT RESPONSIBLE FOR THE REPAIR CHARGES BECAUSE THE VEHICLE WAS SERVICED BY AN INDEPENDENT MECHANIC. THE REAR END SEAL, TRANSMISSION COLLAR, INTAKE GASKET, THEUPDATED 04-20-09 *BF HEAD GASKET ON THE ENGINE, AND THE CATALYTIC CONVERTER WERE ALL REPLACED. THE FAILURE MILEAGE WAS 98,000.
NHTSA ODI #10262750
50,000 miles · Feb 23, 2009
Power Train
TRANSMISSION FAILED WHILE DRIVING. LOST REVERSE 2ND AND 4TH. COMMON PROBLEM WITH POOR QUALITY TRANSMISSION COMPONENTS USED BY GM. SCUM. ANYWAYS, ECONOMY IS IN A RECESSION AND I HAVE LOTS OF BILLS TO PAY AND NOW THIS ONE AS WELL. THANKS. I LAUGH EVERYTIME GM'S STOCK GETS LOWER. THEY TRULY DESERVE IT. *TR
NHTSA ODI #10259637
NHTSA investigations
2EA04011 · Parking Brake Failure
Opened Apr 9, 2004 · Closed May 10, 2005
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical; Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Additional source detail variants (4)
Parking Brake:conventional
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
PE03057 · Parking Brake Failure
Opened Dec 8, 2003 · Closed Apr 9, 2004
Status: closed (inferred from source dates) · Parking Brake
ODI OPENED PE03-057 TO ASSESS PARKING BRAKE INEFFECTIVENESS IN THE SUBJECT VEHICLES.THESE VEHICLES ARE EQUIPPED WITH FOUR WHEEL DISC BRAKES THAT INCORPORATE A SINGLE-SHOE DRUM-IN-HAT PARKING BRAKE INDEPENDENT OF THE SERVICE BRAKES.COMPLAINT AND WARRANTY DATA INDICATE THAT THE PARKING BRAKE LININGS TEND TO WEAR OUT EARLY IN THE LIFE OF THE VEHICLE (AT AN AVERAGE OF 24 MONTHS IN SERVICE), REDUCING THE PARKING BRAKE SYSTEM'S TORQUE BELOW THAT NEEDED TO IMMOBILIZE THE VEHICLE.GM HAS ATTRIBUTED THIS ACCELERATED WEAR TO FOREIGN MATERIAL INTRUSION AND A FAILURE OF THE BRAKE SHOE TO PROPERLY SELF-CENTER WITHIN ITS BRAKE DRUM.EFFECTIVE WITH THE START OF MY 2003 PRODUCTION, A NEWER REDUCED FORCE HOLD-DOWN CLIP WAS INTRODUCED TO FACILITATE BRAKE SHOE DISENGAGEMENT FROM THE DRUM SURFACE.THIS PART IS ALSO AVAILABLE AT THE SERVICE LEVEL FOR THE MY 1999-2002 VEHICLES.GM HAS INDICATED THAT THE PAKING BRAKE IS INTENDED TO OPERATE IN CONJUNCTION WITH THE TRANSMISSION TO IMMOBILZE PARKED VEHICLES, AND THAT IN MANY CASES, ACCELERATED PARKING BRAKE LINING WEAR IS CAUSED BY ROUGH USE, VEHICLE MODIFICATIONS, AND DRIVING WITH THE PARKING ENGAGED. ODI HAS UPGRADED THE PRELIMINARY EVALUATION TO AN ENGINEERING ANALYSIS TO GATHER FURTHER INFORMATION CONCERNING PARKING BRAKE USAGE FACTORS AND THE CIRCUMSTANCES SURROUNDING THE SEVENTEEN REPORTED VEHICLE CRASHES.
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